Water closet tank



FIG. 1 is a perspective view taken from the top, front and left side ofa water closet tank showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side elevational view, the right side elevational viewbeing the mirror image of the left side.

The fragmentary broken line representations of holes in FIGS. 1, 2, 5and 6 are for the purpose of illustration only and form no part of theclaimed design.

The ornamental design for a water closet tank, as shown and described. 